To AlexanderH and chiccopilota:
I recommend you Skymates in Arlington, TX. Based on KGKY, it has a nice fleet, a lot of instructors and is not too busy at the moment. If you google for "skymates", you'll get many positive feedbacks from people who had experience with it.
If you'd like to have further information, please send me a PM.
p.s. chicco ci sono molti italiani alla skymates, perfino il proprietario!